Paul kreuzhage



P. KREUZHAGE.

SPRAY NOZZLE. APPLICATION FILED JULY I5. 1913. RENEWED we 2|, m9.

Patented Oct. 21, 1919.

UNITED s ATEs m n OFFICE.

PAUL ICREUZHAGE, OF STU'ITGART, GERMANY, ASSIG-NOR TO FIRM OF PAUL LECHLER, OF STUTTGART, GERMANY.

SPRAY-NOZZLE.

Specification of Letters Patent.

Application filed July 15, 1913, Serial No, 779,129. Renewed June 21, 1919. Serial No. 305,910.

To all whom it may concern:

Be it known that I, PAUL KREUZHAGE, a subject of the King of lVurttemberg, residing at Stuttgart, Germany, have invented certain new and useful Improvements in Spray-Nozzles, of which the following is a specification.

This invention relates to spray nozzles and has for its primary object to provide an improved construction combination and arrangement of parts in a device of this character, according to which the degree of atomizing, the amount of liquid used and the size of the spray cone can be controlled by regulating the available pressure in a single conical spiral channel which distributes the liquid uniformly over the spray cone. Toward the attainment of this object, a member is employed which serves as a connecting piece to the fllllfl-COlldllCllOl, said member being provided with a frusto conical portion having a conical spiral channel, inclosed in a spray-hood made adjustable on it, andwhich, in its retracted position bears against the cone and has on its inner wall a fiat face at right angles to the longitudinal axis of the orifice. Between this face and the cone there remains a hollow space or chamber. The angle of the cone is preferably about 45 degrees, so that in adjusting the hood, the size of this hollow space need be changed but slightly in comparison to the change in amounts of fluid passing through it. By this construction it ecomes possible to vary the whirling effect imparted to the liquid in said chamber before it reaches the orifice. ,The atomizing action of the nozzle may thus be regulated as desired. At the same time, the current as it issues from the conical spiral channel is being contracted by a conical surface which converges toward a point which is distant from the orifice in said spray-hood a less distance than the axial extent of said chamber.

I obtain the mentioned objects by the mechanism illustrated in the accompanying drawings in which:

Figure 1 is a sectional view, and

Fig. 2 is a plan view the spray-drum beingtaken off.

The water under pressure is conducted through the conducting tube 1 into the helical conducting-channel 2 provided in the body 3; this body is substantially formed as a cylindrical pipe at the one end of which terminates in a hexagonal flange 5, the other end of the said pipe being tapered to a truncated cone 6. The cylindrical portion t of the body 3 is provided with an inner thread 7 and with an outer thread 8. The conducting-tube 1 is attached to the cylindrical portion 4; by means of the mentioned inner thread, the spray-drum however is coupled to the cylindrical portion 4 by means of the outer thread 8. This spraydrum 9 consists also substantially of a cylinder 1O tapering to a truncated cone 11, this truncated cone being provided witha small orifice 12 at its outer end. The said orifice is an outlet of an interior chamber 13 formed also as a truncated cone by the truncated cones 6 and 11.. Said interior chamber is made in the form of a truncated cone in order that the spray, in spite of the fact that only one conducting channel is used, may take the form of a symmetrical spray cone, rather than a distorted shape, a cross section of which would be an oblique conical section and this, moreover, with a minimum eXpenditure of water or other liquid. The truncated cone-shaped portion 6 of the body 3 bears againstthe inner face of the cone 11 of the spray-drum 9; in consequence the liquid will flow only through the helical conducting-channel 2; in this case the nozzle sprays with the minimum expenditure of water and with the finest spray. If it is desired to regulate the quantity of liquid and the fineness of the mist, it is only necessary to provide a space between the cone and the inner face of the truncated cone 11-by screwing off a little the spraydrum 9; for the liquid will flow not only through the helical conductingchannel 2, but also around about the inner face of the cone 11 and through the interior chamber 13 toward the nozzle-orifice. Since the greater quantity of fluid is caused to flow through the helical conducting-channel .2 and the said channel extends along the whole circumference of the cone 11, the fluid flowing through the space between the truncated cones 6 and 11 toward the orifice of nozzle is swept away by the great mass of fluid flowing through the helical channel. If the helical conducting-channel 2 is clogged by dirt or the like, the spray-drum 9 is screwed off a little, so that the dirt or the like canbe flushed oil. It is not necessary to stop the flow in cleaning the nozzle.

lVhat I claim as my invention is:

1. In a spray nozzle, an exteriorly threaded cylindrical tubular body provided with a forwardly extending frusto-conic'al portion having a spiral channel or groove discharge orifice in the endwall of said hood. I

2. In a spray nozzle, an exteriorly threaded cylindrical tubular body provided with a forwardly extending frusto-con-i'cal portion having a spiral channel or'groove 1n the external wall thereof, and a comprising a cylindrical body threaded to said exterior-1y threaded tubular body and provided with a hollow frusto conical surface' adjustable toward and away from the corresponding frusto-conical portion of said tubular body, said nozzle being provided with an outlet chamber into which said spiral channel or groove empties and with a discharge orifice in the end wall of said hood, the lrustoronical surfaces of said tubular body and hood when in close contact,-converging to a center which is distant from said orifice less than the axial extent of said chamber. 7

In testimony whereof I afiix my signature in presence of two witnesses.

LUDWIG TRAUB, FRITZ RATTELMILLER.

Copies ot thh patent may be obtainedto! live cents each, by addressing the "Commissioner of Patents, Washington, D. 0'. 

